Diesel engine air meter



. S. PELC DIESEL ENGINE AIR METER Dec. 14, V1948.

Filed Dec. 28. 1944 Si a INVENTOR. gsfmff Pg/a, f

ArrRN EVS Patented Dec. 124,- 1948 I assume v e missin, monarca c `Stanley:il'elc, "Sharon, ,Application necemberzs, 1era-semi Ncxsvtirse 'The 'invention relates to fan A-'arr @mitral 'mehanism for Ifluidpowerl units and more Jespeenilly 'to ra Diesel engine metering mechanism.

'The primary oblje'ct of' llthe invention le provision of mech anism'f 'ftfliisfehairafcten wherein thefi-rrtalke lof `aira-nd 'thrtsfoxygen 4k'ln-to 'the eylind'er er; Ycylinders of a power 'unit "will 1he fautomatiea'llyv v4ccntrolied, -so as to :assure lecient operation tl-ietreo'fl 'anfat thesame-time'permittmg enough Volume of intake y'to "maintain yfan e'lcient combustion pressure.

- Anotherebliedtoffthcinventibnis thetprovisl'qn of mechanism fof `this''ch:atrae-ter, wherein power-unit hy admitting the -"exaict Iannimmt Yof an smoothly', requiring vless finbricaton, and Jelimnates the 'burni'ngfeut of valves-and A"etherparts; as' Well fasi avoids theI the' unitfdure rngthe Workingfthereof. f

furtherobject ofthe invention 'is 'the/mm visio-n of mechanism of this character, ``s simple -in- -constructiorr,y thoroughly' relialile and eilci'ent fin "the 'work-ing yGhereoi; strong, durable, yautour-1atie "in the operation, and :linexpensivefto manufacture-'and'install 'With 'these 'andi ther'A-bje'cts in view', "the in vent'ion consists f fthe ffeatures for combination 'and-arrangement- :of parte 'as wi be 'hereinafter moreiffuliy' described-i Hll'mtrai'ed in the accompansririgA drawing; which-ishowsthe preferred embodiment of the invention, and pointedlout in #thefclaims hereunto appended.

In the accompanying. drawing.;

The single 'figure 'is 'an' elevation, vpartly broken away-,- ofaDiesel. eminem-:assurantien with -4the 1 mechanism constructed in accnndmneefwith the invention.`

Referring to vthe drawing lin detail, A designates generally a Diesel engine constituting thefpower unit having fourcylinders 1I llfwhic'h have= lnstitlled vtlfrereyvith the fuel injectors vI I?, fofanystand'ard construction, whileinvolved with-the intekenen-i- .fold I2` of' this unit is a combined meter and mixer; which is` inthe .form-soi 'aicylindricaltdrum 'with the upper head-end `I 4, *while at fthe llower head end I5 ,isarr air intake valve I6, adapted to be manually regulated.

Arranged within the drum: -I'3'fis a, flow nozz'l'ei-W having itsinpp-le Idirected'l'toward a perforated baffle cone I9 within such drum and uppermost to the said nipple. This nozzle I'l is joined with a supply elbow pipe 20 carried through the lower portion of the side wall of the drum I3, and communicating with a carbon dioxide container 2l E5 (CLIM- 1:19)

bym @pilaren-2.2., the latter being tted :with a: iregulaited valvefland container equipped fivith zzindiicatorsf Z'Il' which :a mgulator pressure. gauge. and cylinder pwessmeigauge respectively. l

"Th'evp'ipes'l'iiand :22 arefconnectedzt'o ai-pressure rc'gulatr `fen-elosure mi, having the -a'heilnws pressm meguliator 127| therein, .gemeinsame ihasueemmuncatinn .with thessaid pipes: Kat, the

,Iowerfpmion di onefend, whilesat the .upper iperadf the' other 'of such. enclosure a heat imhamig-erfcoiliw czoxlurnmi(rates.iiilfieren'ytthu 'The nozzle I1 has within the same a butteuy valve 29 which is operated directly fizemafly-:beilligovernur '30, l=interge'ared fataal-i with the power' shaft Mweftheunith..

fexhmiist,manifoldf 33 sof: Alias eemmurricaztionfwith a. :baffle equipped. exhaust munter the bames; :being fdenoted at 35 :and fleadingttrom 'this' :muffler 34 is a puppet type valcercasing' Ii,- .h'avmg the pappetwvalve'l- Vwork-- ing- :thenein 'through the' :faction a, Iliiiter: cam $85, ith'e leasingl hengfirr communica-tion with the: zheatfexcharrger coilf, .arbor Mi lef .msml :38 K4isaiitte'd a @turning crank. yAll.; 4:-Ii ist connected'. :a "bellcnaxrk ft2," Lfbdngscontroli'eiil the pressure regulatorzzlf.. `.'lheiarlclmr39? iszsupported Len-5a. "ll'he thmvwznudf Mr'ot'rthe govememiistimasseeiatinn'with aftensifoningvspning lig. bracketed: =lat :45 fexiiericnly :the drum; |11

turning .faxlxe :L15 ofthe fbellleermk: 42 is .cam- `@siedi hyiajhanger Miron the: enclnsuzxieji.. the i'apenaticnottlteimechanism it isrftuhesundeisstoo'd ,inegulaxorm ris pressure Iregwlated? and' not heat-actuated.. 'Thomason Iforetltisbeingthazt 'the heat- :exchanger 1 281 Afcoolsr fthe' exhaust'. @before fit,enverslithezregnlator'lzflf.

when itheuexhwst vgas enters 'the 'heat exchanger coil? 282 hWhere the gtempcratti-ire vis fof the exhaust.' gas eooledi iby 'theeo'il' 3218 depending fon atnmspherlel @conditions existing at fthe 'time of #operation 'of the device. From thefceil 28 the heated vgases pass to theheat vanitua'te'd pressure regulator. When 'the engine "i's- 'under tullf lea d'1, liiicl'e'ifi any, v1exii'austf fga'srw'i'llf' fbef'nee'de'd in the meter land miner, lbut-atsuch aftimethe :exhaust-gas inyItalie chamberl lwill'A he- 'at its greatest pressure: 'when ftheengine is :under ia light ltaewli'or` idling, little oxygen and -'a large amount of exhaust gas will be required, but at such a time the gas in the chamber 34 will be under much less pressure. Thus when the pressure in the chamber 26 drops, the pressure regulator 21 will open the valve 3l, since the opening is maintained constant by means f the pressure, l regulator in proportion to the intake of fuel intoV the motor, therefore as the intake of fuel decreases and the pressure on the head of the valve 31 decreases due to the natural fallv ofA exhaust pressure, the pressure regulator will operate to rotate the cam 38 to permit the exhaust gas to enter the heat exchange coil. The gas and air are mixed thoroughly in the chamber 50 formed by the drum I3. The correct amount of exhaust gas, for the most eicient operation, is admitted by the valve 29 which is controlled by the governor should the exhaust gas be found undesirable for eflicient operation carbon dioxide gas stored in tank 2| can be admitted into the meter and mixer in lieu of the exhaust gas. By admitting the exactamount of air for the eicient operation of the unit A, it will operate more smoothly, less lubrication oil will Ibe consumed, and the valves and other parts will not have a tendency to burn out as where there is an Vexcess of oxygen.

What is claimed is:

1. A metering mechanism of the kind described, comprising a drum forming a metering'chamber, means connecting the drum to the intake manifold of a fluid power unit, means for admitting air to the chamber, a flow nozzle within the chamber and having a governor controlled valve therein, a carbon-dioxide container communicating with the nozzle, a pressure regulating enolosure communicating with the nozzle, a pressure regulator within the enclosure, a heat exchanger communicating with the enclosure, and having communication with an exhaust manifold of the power unit, and lmeans controlledv by `the regulator for the last named communication.

. 2. A metering mechanism of the kind described, comprising a drum forming a metering chamber, means connecting the drum to the intakemanifold of a iiuid power unit, means for admitting air to the chamber, a flow nozzle within the chamber and having a governor controlled valve therein, a carbon-dioxide container communicating with the nozzle, a pressure regulating enclosure communicating with the nozzle, a pressure regulator Within the enclosure, a heat exchanger .communicating with the enclosure, and having communication with an exhaust manifoldof the :power unit, means controlled by the regulator for the last named communication, a valve included in the last named means, and a lifter cam operating the valve.

3. A metering mechanism of the kind described,

comprising a drum forming a metering chamber,

.the valve and means for'regulating the communication between the container and the nozzle,

4. A metering mechanism of the kind described, comprising a drum forming a metering chamber,

f means connecting the drum to the intake manifold of a uid power unit, means for admitting air to the chamber, a now nozzle within the chamber and having a governor controlled valve therein, a carbon-dioxide container communicating with the nozzle, a pressure regulating enclosure communicating with the nozzle, a pressure regulator within the enclosure, a heat exchanger communicating with the enclosure, and having communication with an exhaust manifold of the power unit, means controlled by the regulator for the last named communication, a valve included in the last named means, a lifter cam operating the valvemeans vfor regulating the communication between the container and the nozzle and a driving connection governor controlled between the valve and the governor.

5. A metering mechanism of the kind described, comprising a drum forming a metering chamber, means 4connecting the drum to the intake manifold of a, fluid power unit, means for admitting air to the chamber, a flow nozzle within the chamber and having aY governor controlled valve therein, a carbon-dioxide container communicating with thenozzle, a pressure regulating enclosure communicating with the nozzle, a pressure regulator within kthe enclosure, aheat exchanger communicating with the enclosure, and having communication with an exhaust manifold of the power unit, means controlled by the regulator for the last named communication, a valve included in the last named means, a lifter cam operating the valve, means for regulating the communication between the container and the nozzle, a driving connection between the governor controlled valve and the governor and a valved air inlet means connected with the chamber.

STANLEY PELC.

` REFERENCES CITED Thefollowing references are of record in the le of'this. patent:

4 UNITED STATES PATENTS Number Name Date 911,345 Tait et al. Feb. 2, 1909 1,136,715 Pitts Apr. 20, 1915 1,263,735 Bolton Apr. 23, 1918 1,377,535 White `May 10, 1921 1,640,790 McClain Aug. 30, 1927 1,652,122 Horning Dec. 6, 1927 2,023,024 i Kittell Dec. 3, 1935 FOREIGN PATENTS Number l Country Date France June 7, 1937 

